I use heavy barrel with angled, I wouldn't use it without angled. But I can imaging running it with flash hider + ergo for closer engagements.
I would chose flash hider over comp because the effects of the comp will be minimal accuracy wise

In my analyses, na gets a slight T100 advantage over ca because you can use 4 instead of 3 shot bursts up to ~40 m. The plots in this post agree with Rez in naked barrel being very close to compensator in T100, while both are clearly inferior to HB in both short and long ranges. This is kinda trivial result because the penalty of HB does not influence these estimates. So, for comp vs. naked question: they are statistically on par and on top of that comp gives a usability advantage. A small one though because .4 isn't a lot of H rec. And in addition, the usability advantage of comp is diluted by it forcing you to micro burst while with the naked you can get away with longer bursts in medium ranges.

On topic, after some side-by-side playtesting, I think I'm drifting towards flash hider + angled and saving the HB + angled to those situations where I spawn on a roof camping squad mate and intend to stay there.

"Less is more? How can that be? How could less be more, that's impossible. More is more." Yngwie Malmsten
"Many bullets help." WoopsyYaya
"most rhetorically legitimate ad hominem 2015" ToTheSun!

Okay, the SCAR-H is my baby. It's my most used weapon, and the weapon I used when I played competitively. There have been several occasions where I have messed with the attachments to find what works for me.

For primary sight, I prefer Kobra in pubs now, but had to use the RDS in comp. The Kobra is amazing on the SCAR for a couple reasons. The most obvious is the open sight picture. However, the T shape of the Kobra is spectacular for having a reference point while leading targets or adjusting for bullet drop. This is very important on the SCAR due to the slower velocity.

For secondary sight, I used the laser sight for the longest time. For my monitor, the green laser stands out more when ADS. This is nice for countering the visual recoil (different from normal recoil) that happens when tap firing. However, the visual recoil isn't very severe on the SCAR, so I've learned how to compensate without a laser. Instead, I run magnifier for that extra option to either double tap HS a head glitcher at range, or when watching down a mid-long range lane.

For grip, I ran angled for a long time. This was due to the fact that with it, your FSM is practically 1, giving you an extremely good recoil pattern for tap firing. However, I was losing fights at close-mid range to M416s and ACEs. Given the SCAR's DPS, that shouldn't happen. What was happening is I either was tap firing too much or too little, either making my spread too high or making my effective ROF too slow. So I switched to the stubby grip for a couple of reasons. First reason is obvious, to counter the SCAR's natural high spread per shot. The second reason is due to the lower max spread. This allows me to mag dump the SCAR when shooting exposed enemies up to about 20m or so and still maintain accuracy. This helps a lot in the SCAR's case. It allows you to take full advantage of the SCAR's superior killing power up close.

For barrel, I've tried them all for a while. Compensator felt nice at first, but the SCAR already has low H-recoil and the spread increase is pretty large. I really liked running around in pubs with the heavy barrel for a while. However, even after practicing with it, the recoil is just too much to be able to consistently hit head glitchers and mid-long range targets that are in cover. That means that it is useless in competition. On the other hand, the muzzle brake on the SCAR is amazing for killing head glitchers and mid range targets. It's also amazing for lining up easy headshots. This is why you see a lot of competition players use it. However, using the muzzle brake on the SCAR also loses the primary advantage of the stubby grip. Naked barrel or a suppressor are both absolutely amazing, if you are good at compensating recoil, drop, and leading targets. You'll still be able to kill head glitchers, and targets in cover. Naked vs suppressor depends on if you're more close or long range. You don't lose a lot by using the suppressor, so keep that in mind.

TL;DR
Use a naked barrel or suppressor with a stubby grip for an extremely efficient setup. If the recoil is too much, "train" with the muzzle brake, but get rid of it when you can.

Interesting post. I've been running SCAR with AG + MB/FH and while both setups are amazing at med-long ranges I've found the combo rather lacking in short/med ranges for some reason I couldn't quite put my finger on. I'll test it with stubby+FH, if you are correct and it does help with those ranges, I might just go back to SCAR again.

Okay, the SCAR-H is my baby. It's my most used weapon, and the weapon I used when I played competitively. There have been several occasions where I have messed with the attachments to find what works for me.

For primary sight, I prefer Kobra in pubs now, but had to use the RDS in comp. The Kobra is amazing on the SCAR for a couple reasons. The most obvious is the open sight picture. However, the T shape of the Kobra is spectacular for having a reference point while leading targets or adjusting for bullet drop. This is very important on the SCAR due to the slower velocity.

For secondary sight, I used the laser sight for the longest time. For my monitor, the green laser stands out more when ADS. This is nice for countering the visual recoil (different from normal recoil) that happens when tap firing. However, the visual recoil isn't very severe on the SCAR, so I've learned how to compensate without a laser. Instead, I run magnifier for that extra option to either double tap HS a head glitcher at range, or when watching down a mid-long range lane.

For grip, I ran angled for a long time. This was due to the fact that with it, your FSM is practically 1, giving you an extremely good recoil pattern for tap firing. However, I was losing fights at close-mid range to M416s and ACEs. Given the SCAR's DPS, that shouldn't happen. What was happening is I either was tap firing too much or too little, either making my spread too high or making my effective ROF too slow. So I switched to the stubby grip for a couple of reasons. First reason is obvious, to counter the SCAR's natural high spread per shot. The second reason is due to the lower max spread. This allows me to mag dump the SCAR when shooting exposed enemies up to about 20m or so and still maintain accuracy. This helps a lot in the SCAR's case. It allows you to take full advantage of the SCAR's superior killing power up close.

For barrel, I've tried them all for a while. Compensator felt nice at first, but the SCAR already has low H-recoil and the spread increase is pretty large. I really liked running around in pubs with the heavy barrel for a while. However, even after practicing with it, the recoil is just too much to be able to consistently hit head glitchers and mid-long range targets that are in cover. That means that it is useless in competition. On the other hand, the muzzle brake on the SCAR is amazing for killing head glitchers and mid range targets. It's also amazing for lining up easy headshots. This is why you see a lot of competition players use it. However, using the muzzle brake on the SCAR also loses the primary advantage of the stubby grip. Naked barrel or a suppressor are both absolutely amazing, if you are good at compensating recoil, drop, and leading targets. You'll still be able to kill head glitchers, and targets in cover. Naked vs suppressor depends on if you're more close or long range. You don't lose a lot by using the suppressor, so keep that in mind.

TL;DR
Use a naked barrel or suppressor with a stubby grip for an extremely efficient setup. If the recoil is too much, "train" with the muzzle brake, but get rid of it when you can.

Interesting post. I've been running SCAR with AG + MB/FH and while both setups are amazing at med-long ranges I've found the combo rather lacking in short/med ranges for some reason I couldn't quite put my finger on. I'll test it with stubby+FH, if you are correct and it does help with those ranges, I might just go back to SCAR again.

It does help a lot more than you'd think. It brings the SCAR's SIPS down to almost ACE levels and lowers max spread from 1.5 to 0.99. This allows for accurqte mag dumping at close range. The lower SIPS allows for either longer bursts or faster recovery between bursts. The time you allow between bursts does have a noticeable factor, even when microbursting. That's why I don't use a compensater.

Quoted from "Pheozero"

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